10 Algebra

This section covers the Calc features that help you work with
algebraic formulas. First, the general sub-formula selection
mechanism is described; this works in conjunction with any Calc
commands. Then, commands for specific algebraic operations are
described. Finally, the flexible rewrite rule mechanism
is discussed.

The algebraic commands use the a key prefix; selection
commands use the j (for “just a letter that wasn't used
for anything else”) prefix.